Method for guiding floors during their lifting



Jan. 9, 1968 E, G, v. HEROLF 3,362,126

METHOD FOR GUIDING FLOORS DURING THEIR LIFTING Filed Nov. 255, 1964 3Sheets-Sheet l FIGJ f A Av v/Av/Av/,Q

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INVENTOR.

Jan. 9, 1968 E. G. v.v|n-:Ro| F 3,352J25 METHOD FOR GUIDING FLOORSDURING THEIR LIFTING Filed Nov. 2:5, 1964 5 Sheets-Sheet 2 FIGB IN VENTOR.

Jan. 9, 1968 Y. E. G. v. HEROLF 3,362,126

METHOD FOR GUIDING FLOORS DURING THEIR LIFTING Filed Nov. 23, 1964 3Sheets-Sheet 5 3,1.,5 O fzafzb IN VEN TOR.

United Sta-tes Patent O 3,362,126 METHOD FOR GUIDING FLOORS DURING THEIRLIFTING Erik Gsta Vilhelm Herolf, 10 Bankgatan, Sundsvall, Sweden FiledNov. 23, 1964, Ser. No. 412,995 Claims priority,applilcatitsnli/Sg/eden, Nov. 25, 1963,

ABSTRACT F THE DISCLOSURE A novel method of providing lateral guidanceto floors Iduring ltheir lifting Ifor the erection of build-ings, bymeans `of a removable, vertically extended, stiifening structure.

This invention relates to a method 1of providing lateral guidance |toiloors dur-ing their lifting for the erection of buildings by using `avertically extended structure.

In conventional methods for lifting lloors attention was not paidsuii'ciently to providing lateral stabilization. Acccrding to onemethod, however, the llo ors are Ilifted while being 4guided byconstructions remaining as permanent components in the building, as forexample elevator shafts and staircases which in such la case fareerected prior 'to the lifting of the floors. According to anothermethod, the yguidance is effected by iron stands which are not intendedto remain as permanent components in 'the building but can be placed inthe spaces provided to serve for staircases and elevator shafts.

This invention is substantially characterized in that the methodcomprises a first operation phase wherein a laterally stiifeningstructure is lanchored in a cast base plate `and serves as guiding meansduring the lifting ci the basement lfloor and of one or some more iloorsuntil said floors have reached their level of mounting and `aresupported by vertical building elements, and la second operation phasewherein 'the structure is separated from the base plate and is securedto the next ilo'or to be lifted with which it follows during its liftingwhile at t-he same time being guided by the basement floor and the irs'tfloor or, alternatively by the irst doors already in position.

This invention relates to `a novel method of providing lateral guidanceto floors during 'the erection of building structures. The methodessentially comprises forming a base plate, providing a verticallyextending guiding and stilfening structure, ancho-ring the lower end ofsaid stiffening structure in said base plate, forming at least one ilooron said base plate with portions `thereof engaging 'the stileningstructure in guiding relationship, sequentially lifting each iloor toits final position in the building and positioning substantiallyvertically extending supporting means intermediate the floors, formingat least lone additional floor yon 'the uppermost supported floor withportions engaging the stiifening structure in guiding relationshipwherein said s'tiifening structure is of -a length 'at least equal t-othe *thickness 'of the floor stack increased by two storey heights,separating the lower end of the stiffening 4structure from the baseplate and attaching the upper end of the stiffening structure to theupper surface of the uppermost of said additional floors and raising thelowerm'ost additional floor into position with the stitfening structurebeing guided by the previously supported floors.

The method according to the invention will be described in greaterdetail in the following, reference being had to the accompanyingdrawings whereon AFIGS. 1-4 show in a schematical manner diferen'toperation phases of the method, and

FIGS. 5 and 6 show by way 'of example some placements of the structure.

ICC

According to the method of the invention, the irst step is 'to pour inconventional manner a base plate 9 and to pour thereon the basementiloor 2a. Prior to the lifting `of the latter by jacks in known manner,a first part of a laterally stitfening structure 3 is mounted on thebase plate on the foundation, preferably of storey height. The saidstructure may comprise two separate sec-tions each placed on one of theouter surfaces of the basement iloor 2a, or the structure may comprisedifferent parts placed in openings provided in 'the basement iloor 2a asshown in FIG. 5, or i-t may be a single section dis-posed directly in'the centre of the basement oor as shown in FIG. 6. This structure andthese structures respectively may, for example, Ibe iron pillars adaptedto take up possible lateral forces in the floors. When the laterallystitfening structure sections are placed at the edges of the iloors,iron guides Aare bolted in the iloors to guide the floors along 'thestructure sections.

After the basement floor 2a is lifted 'by jacks to its level ofmounting, forms are made for the future staircases, elevators shaftsand/or stiffening walls 6 whereafter these elements are poured. As analternative, the said elements may be pre-fabricated units to be mountedin their positions. This part of the method is shown in FIG. l.

T-he basement floor 2a being fixed in the same manner, a plurality `offloors 2b is poured upon the same, whereafter the jacks 1 are placedbelow the basement -floor 2a yand provided with extension rods to extendthrough openings in the basement floor. The jacks 'and rods press theiloor stack upwards by one storey, after the laterally stilfeningstructure 3, 4 has been lengthened by an additional storey height. Theform side which has no contact with the floors 2b at the walls of thestiffening elements, tha-t is staircase walls elevator shaft walls and/or `other walls is lifted in connection with the floor lifting in thatit is anchored in the floor stack.

After 'the lifting lof the iioor stack, the lowermost iloor is ixed onbearing elements whereafter laterally stiffening walls 6 are poured afurther storey height. The described part of the method constitutes thefirst operation phase of the method `and is carried out according toFIGS. 2 and 3 until the structure comprises the three parts 3, 4 and 5.As appears from the said figures, laterally stiftening walls `are pouredand inserted respectively at the end of said operation between the baseplate 9 and the basement o'or 2a as well as between the latter and therst of the floors 2b.

Thereafter follows the second operation phase of the method wherein thestructure 3, 4 and 5 is separated from its foundation on the Ibase plate9 land lsecured to the uppermost floor 2b Yof the remaining floor stack,for example by means of a beam 8. Upon lifting the iloor stack thestructure follows along lone storey, as shown in FIG. 4, and is guidedby the stiffened part of the building, i.e. both in the basement floor2a and in the first hoor 2b.

The pouring and insert-ing respectively of laterally stiiening walls 6is then carried out in the above-described way. As the erection of thebuilding continues, the structure follows along storey by storey until|the building is completed. The structure can then be dismantled for useon another building site.

The laterally stilfening structure need not be higher than the thicknessof the floor stack increased by two storey heights. The structure may,of course, be higher in cases where it is practical `and necessary, forexample, to pour the walls one storey later than described above. Thestructure may also be constructed such, that walls for two s'toreys canbe poured simultaneously, for example for lthe second and third storey,for the fourth and fifth storey, and so on. The same constructions forlateral stiifening may also be used even 4if no permanent walls arepoured before the iloors were lifted to full height in all storeys. Insuch a case, however, the laterally stiftening constructions must `bemade substantially stronger than otherwise required.

What I claim is:

1. A method of providing lateral guidance to oors during 'their liftingfor the erection of buildings comprising providing a verticallyextending `guiding and stiifening structure, forming a base plate,anchoring the lower end of said stiiening structure in said base plate,forming at least `one door on said hase plate with portions engagingsaid structure in guiding relationship, sequentially lifting oor to itsnal position in the ybuilding construction and positioning substantiallyvertically extending supporting means intermedi-ate said iioors, formingat least one additional oor on the uppermost supported lfloor withportions engaging said stiliening structure in guiding relationship,said stifening structure being of a length -at least equal to thethickness of the floor stack increased by two storey heights, separatingsaid lower end of said stileuing structure from said base plate andattaching the upper en'd of said stiffening structure to the uppersurface of fthe uppermost of said additional floors, and raising thelowermost additional floor into position with `said stiifenyingstructure -being guided by the previously supported Iiioors.

2. A method in accordance with claim 1 wherein a plurality of additionalfloors are yformed on said uppermost supported iloor, further includingrepeating the steps of positioning substantially vertically extendingsupporting means intermediate the uppermost supported tloor and thelowermost unsupported oor, and raising the next lowermost additionalfloor into position with said stitening structure being guided by atleast the uppermost supported oor.

'3. A method in accordance with cl'aim f1 wherein after said base plate-is formed two oors are cast thereon with portions engaging saidstilfening structure in guiding relationship, said stiffening structurebeing at least equal to the distance between said base plate and theupper of said `two floors in the iin'al position of the same in saidbuilding construction plus the thickness of: said additional floors, andsaid stitening structure being guided by at least two previouslysupported floors during the lifting of said additional floors.

4. A method in accordance with claim 1 wherein after said base plate islformed, one floor is cast thereon with portions engaging said stieningstructure, lifting said one door to its inal position in the buildingconstruction, positioning substantially vertically extending supportingmeans intermediate said base plate and said one Hoor, casting aplurality of additional oors on said one iloor with portions engagingsaid structure, adding an additional section to said stiffeningstructure to form an extended stitening structure, said extendedstiffening structure being of a length at least equal to the thicknessof the floor stack increased by two sto-rey heights, lifting saidadditional floors 4to locate said rst additional floor in its finalposition in the building construction, positioning substantiallyvertically extending supporting means intermediate said one oor and saidfirst additional oor, separating said lower end of said extendedstiffening structure from said base plate and attaching the upper end ofsaid additional stiliening structure to the upper surface of theuppermost of said additional floors and lifting said additional floorsinto their iinal position in the building construction one storey at atime in the same manner with said extended stiftening structure beingguided by at least the last two previously supported floors.

5. A method in accordance with claim 1 wherein said supporting means arewalls successively cast in situ.

y6. A method in accordance with clairn 1 wherein said supporting meansare staircases successively cast in situ.

7. A method in accordance with claim v1 wherein said supporting meansare prefabricated units.

8. A method in accordance with claim 1 wherein said stiifening structureincludes two sections placed on the opposite outer edegs of the iloors.

I9. A method yin accordance with claim 1 ywherein said stiffeningstructure includes at least one section placed in openings den'ed in thefloors.

References Cited UNITED STATES PATENTS 3,210,903 10/ 1965 Herolf 52-7453,254,466 6/ 1966 Von Heidenstam 52-745 3,283,468 y11//1966 Herolf52-745 FOREIGN PATENTS 1,349,473 12/1963 lFrance.

181,110 l0/1962 Sweden.

HENRY C. SUTHERLAND, Primary Examiner.

M. O. WARNECKE, Assistant Examiner.

